Dust-proof pad for sandpapering and polishing machines.



P. SCHIMMEL. DUST PROOF PAD POD SANDPAPBRING AND POLISHING MAGHINDS.

APPLICATION FILED JULY 18I 1912.

1,045,894 Patented Dec. 3, 1912.

//S ATTORNEY COLUMBIA PLANOCIRAPH Co..\vA5H|NOToN. D. c.

TINTTE STATES PATENT FFTCE.

FRIDOLIN SCI-IIMMEL, OF FARIBAULT, MINNESOTA, ASSIGNOR TO SCHIMMEL, REID&

DUST-PROOF PAD FOR SANDPAPERING AND POLISHING MACHINES.

Specification of Letters Patent.

Patented Dec. 3, 1912.

Application filed July 18, 1912. Serial No. 710,189.

To all whom it may concern.'

Be it known that I, FRIDOLIN SCHIMMEL, a citizen of the United States,residing in Faribault, county of Rice, State of Minnesota, have inventedcertain new and useful Improvements in Dust-Proof Pads for Sandpaperingand Polishing Machines, of which the following is a specification.

My invention relates to a presser foot or pad for use on sanding,abrading or polishing machines, for polishing and finishing woodworkwhere a high finish is desired, and has for its object the production ofa pad or presser foot so constructed that the dust is prevented fromentering between the flexible portion of the pad. Heretofore, muchdiii'iculty has been experienced due to the dust accumulating betweenthe canvas and the felt which causes ridges in the finished surface ofthe work.

The foregoing and other features of my invention will now be describedin connection with the accompanying one sheet of drawings, forming partof the specification, in which I have represented my dust-proof pad inits preferred form, after which I shall point out more particularly inthe claims those features which I believe to be new and of my owninvention.

Figure 1 is a top view of my pad. Fig. 2 is an enlarged cross sectionthereof. Fig. 3 is an enlarged longitudinal section thereof. Fig. 4 isthe detail of the engaging means for the canvas covering.

In my invention I employ a rectangular member 1 provided on one end witha clamping device 9. On the opposite end is a spring compressed clampingdevice 3. Secured to the member 1 I provide strengthening crosspieces etwhich are adapted to be attached to the operating plungers or contactingdevice of any sanding, abrading o-r polishing machine. As there are wellknown machines on the market a further description is thought to beunnecessary and further because I make no claim in this application tothese contacting devices.

Attached to the bottom of the rectangular member l I provide a felt overwhich a specially prepared canvas 6 is stretched and tightly held bymeans of the spring compressed clamping means 3 and the clamping means2. The member 1 is grooved along the sides so as to receive the longside of the metal member 8 which is bent over on itself forming achannel 9. This member 8 is so positioned that no part depends below theplane surface of the pad 5. As will be readily seen by referring to Fig.2, the canvas 6 is adapted to be held up against the pad 5 by thesechannels 9 which are continuous throughout the length of the member l.As will be readily understood the canvas can be easily removed whendesired by loosening the clamping means and sliding the material outfrom engagement of the channels.

I wish it distinctly understood that my dust-proof pad hereinillustrated and described, is in the form in which I desire tovconstruct it and any changes or modifications may be made wit-houtdeparting from the salient features of my invention and I thereforeintend the following claims to cover such modiications as naturally fallwithin the lines of invention I claim:

l. In a flexible pad, a rectangular me1n ber provided with a cushion onone face; two metallic strips, set into the long edges of the saidmember, bent so as to form a channel on each side; a stationary clampingmeans on one end, and a flexible clamping means on the other end of therectangular member.

2. In a flexible sander pad, a body provided with a cushion on one face,a covering over the cushion, means for securing the covering to the bodyunder tension, means on each side of the body to closely hold thecovering over the cushion throughout the length of the body.

This specification signed and witnessed at Faribault, Rice county, Stateof Minnesota, this nineteenth day of June, A. D.

FRIDOLIN SCHIMMEL. In the presence of- ROBERT MEE, R. B. KENT.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

